import { asyncRoutes, constantRoutes } from '@/router'
import { getRouterItem } from '@/utils/storage'

/**
 * 使用meta.id确定当前用户是否具有权限
 * @param routerId
 * @param route
 */
function hasPermission (routerId, route) {
  if (route.meta && route.meta.id) {
    return routerId.some(role => route.meta.id.includes(role))
  } else {
    return true
  }
}

/**
 * 通过递归过滤异步路由表  meta:{
 *   id:'当前路由的路径',
 *
 * }
 * @param routes asyncRoutes
 * @param router_id
 */
export function filterAsyncRoutes (routes, router_id) {
  const res = []
  routes.forEach(route => {
    const tmp = { ...route }
    if (hasPermission(router_id, tmp)) {
      if (tmp.children) {
        tmp.children = filterAsyncRoutes(tmp.children, router_id)
      }
      res.push(tmp)
    }
  })
  return res
}

const state = {
  routes: [],
  addRoutes: []
}

const mutations = {
  SET_ROUTES: (state, routes) => {
    state.addRoutes = routes
    state.routes = constantRoutes.concat(routes)
  }
}

const actions = {
  // rootState: for modules/users filter router id
  generateRoutes ({ commit, rootState }, roles) {
    return new Promise(resolve => {
      // let {router_id} = rootState.user;
      const router_id = getRouterItem()
      // let accessedRoutes;
      // if (roles.includes('admin')) {
      //   accessedRoutes = asyncRoutes || []
      // } else {
      //   accessedRoutes = filterAsyncRoutes(asyncRoutes, roles)
      // }
      const filterRouter = filterAsyncRoutes(asyncRoutes, router_id)
      commit('SET_ROUTES', filterRouter)
      resolve(filterRouter)
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}
